Abstract
This work provides the first description of the Chilean endemic Calceolaria maulensis sp. nov., known from a coastal locality near Empedrado and four disjunct pre-Andean river valleys in the Maule Region of central Chile. Calceolaria maulensis grows within remnant patches of Nothofagus-dominated and mixed sclerophyllous-deciduous forest. It differs from the other perennial herbaceous taxa with rosette-arranged leaves and yellow corollas, by having closed yellow flowers with a well-developed upper lip and filaments as long as the anthers. Based on IUCN criteria, with an extent of occurrence <5000 km2 (3221 km2) and an Area of Occupancy <500 km2 (32 km2), Calceolaria maulensis should be considered Endangered (EN). More extensive surveys of the poorly collected lowlands of the Maule foothills and coastal range are needed.
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